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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../tool/vue.min.js"></script>
</head>
<body>
    <div class="box">
        <span>我会变换</span>
    </div>
    <script>
        new Vue({
          el:'.box',
          data:{
            opacity:1
          },
          methods:{

          }
        })
    </script>
</body>
</html>